原子吸收法测定化探样中的微量汞

Determination of Trace Mercury in Geochemical Samples by Cold Atomic Absorption Spectroscopy

化探样品中微量汞的测定多采用原子荧光法，采用冷原子吸收法测汞也有报道。本法用简易吸收装置于 GGX-2型原子吸收光谱仪上，进行化探样品中微量汞的冷原子吸收法测定，测定结果表明，汞的含量在（0.01-2）x10-6范围呈线性，经对省Ⅱ级标样36号、38号进行实验，相对标准偏差分别为10.56%和17.83%，可满足化探要求。

Trace mercury in geochemical samples is normally determined by atomic fluorescence method. There also are reports on determination of trace mercury in geochemical samples by cold atomic absorption spectroscopy. The method is to install simple absorption equipment on GGX-2 atomic absorption spectrometer to determine trace mercury in geochemical samples. The results show that, the content of mercury is linear in the range of （0.01-2）x10-6. Provincial level Ⅱ sample No. 36 and No. 38 are determined with the cold atomic absorption spectroscopy, relative standard deviations are 10.56% and 17.83% respectively, so the method can meet the requirements of geochemical exploration.